From d9457dc056249913a7abe8b71dc09e427e590e35 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 12 Jun 2012 16:20:39 +0200 Subject: xfs: Convert to new freezing code Generic code now blocks all writers from standard write paths. So we add blocking of all writers coming from ioctl (we get a protection of ioctl against racing remount read-only as a bonus) and convert xfs_file_aio_write() to a non-racy freeze protection. We also keep freeze protection on transaction start to block internal filesystem writes such as removal of preallocated blocks. CC: Ben Myers CC: Alex Elder CC: xfs@oss.sgi.com Signed-off-by: Jan Kara Signed-off-by: Al Viro --- fs/xfs/xfs_file.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'fs/xfs/xfs_file.c') diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 9f7ec15a6522..f0081f20e5c0 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -781,10 +781,12 @@ xfs_file_aio_write( if (ocount == 0) return 0; - xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); + sb_start_write(inode->i_sb); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { + ret = -EIO; + goto out; + } if (unlikely(file->f_flags & O_DIRECT)) ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, ocount); @@ -803,6 +805,8 @@ xfs_file_aio_write( ret = err; } +out: + sb_end_write(inode->i_sb); return ret; } -- cgit v1.2.3